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利用自行研制的镀锌模拟设备,研究了氢气含量对于热镀锌低硅双相钢在连续退火镀锌后的表面氧化物形貌及抑制层的影响,并用SEM和XPS等手段进行了微观分析。结果表明:表面氧化物主要为MnO和Cr2O3,随着氢气含量的增加,氧化物数量和尺寸大小增加,但并没有影响氧化物的种类。随着氧化物数量和大小的增加,热镀锌后双相钢表面生成的抑制层质量下降。抑制层晶粒变得粗大,抑制层中出现空隙。
The influence of hydrogen content on the morphology and inhibition layer of surface oxides of hot-dip galvanized low-silicon dual-phase steel after continuous annealing was studied by means of galvanizing simulation equipment developed by ourselves. The microscopic analysis was carried out by means of SEM and XPS . The results show that the surface oxides are mainly MnO and Cr2O3. With the increase of hydrogen content, the number and size of oxides increase, but the oxide types are not affected. With the increase of the amount and size of oxides, the quality of the inhibition layer produced on the surface of the dual-phase steel after hot-dip galvanizing decreases. The suppression layer grains become coarse, suppressing voids in the layers.